<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>
    <script>
        function jie(a) {
            var s = 1;
            for (var i = 1; i <= a; i++) {
                s *= i;
            }
            // alert(s)
            return s;
        }

        var sum = 0;
        for (var i = 1; i <= 10; i++) {
            sum += jie(i);
        }
        console.log(sum);
    </script>
</body>

</html>